Laptop Battery for Apple Macbook Pro 13" A1185 A1181 Ma561 Ma561fe/a Ma561g/a Ma561j/a ,Aluminum Body As Originali-polymer, 10.8v, 4000mah, 60whr6 Cells Battery type: Li-Polymer; Capacity: 5600mAh; Cells: 6-cell; Voltage: 10.8V. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 8-hr x 5-weekday call support, 24-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time: Over 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it